This catalogue is derived from the all-sky survey performed during the ROSAT
mission in the energy band 0.1- 2.4 keV. 105,924 sources are catalogued and
represent the faint extension to the
RASS bright source catalogue
(RASS-BSC, cf. IAUC 6420, Voges et al. 1999, A&A 349,389). The sources have a detection
likelihood of at least 7 and contain at least 6 source photons.
(The likelihood
of source detection is defined as L =-ln (1-P) , with P = probability of
source detection).

For each source we provide the ROSAT name, the position in equatorial
coordinates, the positional error, the source countrate and error, the
background countrate, exposure time, date of observation, hardness-ratios HR1
and HR2 and errors, extent and likelihood of extent, and likelihood of
detection.

Questions or comments may be directed to
xray-info (at) mpe . mpg . de